Hollow metal microneedle array, syringe needle, syringe and prefilled syringe

Abstract

The invention discloses a hollow metal microneedle array, a syringe needle, a syringe and a prefilled syringe. The hollow metal microneedle array comprises a grooved base, a plurality of metal capillary tubes and adhesives, wherein the grooved base comprises an upper surface, a side face and a lower surface, at least two vertically-through spaced parallel grooves are formed in the side face of the grooved base, the metal capillary tubes are placed in the grooves, the upper end of every metal capillary tube protrudes over the upper surface of the grooved base to extend upwards and form a needle suitable for puncture, and the adhesives are applied on the side face of the grooved base and solidified to fix the metal capillary tubes at the groove positions. The hollow metal microneedle array has the advantages of simple, stable and reliable structure, high firmness, flexibility and diversity in design, simple manufacturing technologies, high plasticity, consistency and repeatability and capability of meeting different practical requirements and is applicable to low-cost batch mechanical assembly production.

Description

technical field [0001] The present invention relates to the technical field of medical and cosmetic injection equipment and biomedicine, more specifically, to a hollow metal microneedle array and an injection needle, a syringe, and a prefilled syringe with the same. Background technique [0002] According to the manufacturing process and the substrate material on which the metal microneedles are fixed, the structure of the metal microneedle array in the related art can be roughly divided into three types. Electronic technology manufactures all-metal microneedle arrays and their substrates. The main problem is that the metal is too thin and the structure is very fragile. Bottle-mouth needle tips are commonly used, which are easy to block and difficult to be practical. The manufacturing cost is high and the production cycle is long. , The process is complex. The second method is to process through-hole arrays on bases made of other materials such as metals and polymers, and t...

AI Technical Summary

Problems solved by technology

The third is to use a method similar to injection molding. First, the metal capillaries are arranged in an array and then filled with liquid polymer and solidified. In this structure, the substrate is a whole piece of polymer material, which has a strong structure and strong practicability. However, in the manufacturing process, there are many problems such as complex microneedle arrangement process, high equipment cost, difficulty in reducing the distance between microneedles, single structure, poor flexibility, and a small number of microneedles that can be operated.

Images